/* ==========================================================================
   Gallery — project-based grid + per-project thumbnails + lightbox overlay
   ========================================================================== */

/* ---------- shared section spacing ---------- */
.gallery-section {
  margin-top: var(--space-4);
}

.gallery-section h2 {
  margin-bottom: var(--space-1);
}

.gallery-section p {
  margin-bottom: var(--space-3);
  color: var(--text-muted);
}

/* ---------- grid of projects ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

/* ---------- project card ---------- */
.gallery-project {
  overflow: hidden;
}

.gallery-project__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--space-1) 0;
  color: var(--text);
}

/* cover image */
.gallery-project__cover {
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-2);
  transition: transform 0.2s ease;
}

.gallery-project__cover:hover {
  transform: scale(1.02);
}

.gallery-project__cover img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-2);
  object-fit: cover;
}

/* ---------- placeholder card ---------- */
.gallery-project__cover--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-2);
  color: var(--text-muted);
  font-size: 14px;
  letter-spacing: 0.02em;
}

/* ---------- per-project thumbnail strip ---------- */
.gallery-project__thumbs {
  display: flex;
  gap: 6px;
  padding: var(--space-1) 0 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.gallery-project__thumb {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: var(--radius-2);
  background: none;
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.2s, opacity 0.2s;
  opacity: 0.6;
}

.gallery-project__thumb:hover,
.gallery-project__thumb:focus-visible,
.gallery-project__thumb.active {
  opacity: 1;
  border-color: var(--text);
}

.gallery-project__thumb:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.gallery-project__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- lightbox overlay ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: rgba(0, 0, 0, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.lightbox[aria-hidden="false"] {
  display: flex;
}

.lightbox__close {
  position: absolute;
  top: 16px;
  right: 20px;
  z-index: 10;
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.lightbox__close:hover { opacity: 1; }

.lightbox__content {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 95vw;
  max-height: 85vh;
}

.lightbox__image-wrap {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  user-select: none;
}

.lightbox__btn {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.2s;
}
.lightbox__btn:hover { background: rgba(255,255,255,0.3); }

.lightbox__caption {
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  text-align: center;
  margin-top: 12px;
  max-width: 80vw;
}

.lightbox__counter {
  color: rgba(255,255,255,0.45);
  font-size: 13px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  text-align: center;
  margin-top: 4px;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .lightbox__content { gap: 8px; }
  .lightbox__btn { width: 40px; height: 40px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .gallery-project__cover { transition: none; }
}